Ultrathin and Porous Ni 3 S 2 /CoNi 2 S 4 3D‐Network Structure for Superhigh Energy Density Asymmetric Supercapacitors

Abstract 3D‐networked, ultrathin, and porous Ni 3 S 2 /CoNi 2 S 4 on Ni foam (NF) is successfully designed and synthesized by a simple sulfidation process from 3D Ni–Co precursors. Interestingly, the edge site‐enriched Ni 3 S 2 /CoNi 2 S 4 /NF 3D‐network is realized by the etching‐like effect of S 2... View More